What is a cycle?
A “cycle” is a planned period of anabolic steroid use, followed by a period off. The idea is that you use for a set number of weeks, then stop to allow your body to recover — in particular, to restart natural testosterone production. A typical cycle structure looks like:
On cycle
The period of active steroid use. Typically 8-16 weeks depending on the compound(s) and experience level.
PCT (Post Cycle Therapy)
A protocol using specific drugs (typically Nolvadex or Clomid) to help restart natural testosterone production. Usually 4-6 weeks.
Time off
A period of no steroid use to allow full hormonal recovery. The common guideline is “time on + PCT = time off” as a minimum.
The purpose of this structure is harm reduction. Continuous use without breaks increases the risk of permanent HPTA suppression, cardiovascular damage, and organ strain. However, it is important to understand that even with proper cycling, there is no guarantee your body will fully recover — particularly with repeated cycles.
First cycle guidance
The safest first cycle is no cycle
We are not recommending you do this. If you have decided you are going to, this information can help reduce harm. Make sure you have baseline blood work done before you start anything.
The universally recommended first cycle in harm reduction communities is testosterone only, at 300-500mg per week, for 12-16 weeks. There are good reasons for this:
Why testosterone only?
- Testosterone is the hormone your body already produces. You know how to respond to it, and doctors know how to assess problems with it.
- If you have a bad reaction, you know exactly what caused it. With multiple compounds, you cannot isolate the problem.
- It is the most studied anabolic steroid. More is known about its effects and risks than any other compound.
- The results from a first testosterone cycle are significant. You do not need additional compounds to see dramatic changes.
- It gives you a baseline for how your body responds to supraphysiological hormones before introducing anything else.
Recommended first cycle structure
Testosterone Enanthate or Cypionate
These esters provide stable blood levels with twice-weekly injections. Sustanon works but gives less stable levels.
300-500mg per week
Split into two injections per week (e.g., Monday and Thursday). Starting at 300mg and seeing how you respond is a reasonable harm reduction approach. You can always do more on a future cycle — you cannot undo side effects.
12-16 weeks
Shorter than 12 weeks and you are shutting down your HPTA without getting the full benefit. Longer than 16 weeks increases the difficulty of recovery.
Aromatase Inhibitor — have on hand
Arimidex (anastrozole) or Aromasin (exemestane) should be available but not necessarily used from day one. Use only if oestrogen-related side effects appear (nipple sensitivity, significant water retention). Crashing your oestrogen is as harmful as letting it run high.
Post Cycle Therapy
Starting 2-3 weeks after your last injection (to allow the ester to clear). Typically Nolvadex (tamoxifen) at 20mg/day for 4-6 weeks. Have your PCT drugs before you start the cycle.
Blood work is non-negotiable
Get blood work done before you start (baseline), during the cycle (around week 6-8), and after PCT (to confirm recovery). See our blood work guide for exactly what to test.
Cycle length
Cycle length depends on the compounds being used and the experience of the user. Here are general guidelines used in harm reduction:
Injectable compounds (testosterone, nandrolone, boldenone)
12-16 weeks is typical. Longer esters take several weeks to reach peak blood levels, so shorter cycles waste the first few weeks waiting for the compound to become fully active. Going beyond 16 weeks significantly increases recovery difficulty.
Oral compounds (dianabol, anavar, winstrol)
4-8 weeks maximum. Oral steroids are hepatotoxic (they strain the liver). They are often used as a “kickstart” at the beginning of an injectable cycle while waiting for the injectable to build up. Using orals alone without a testosterone base is widely considered inadvisable.
Short-ester compounds (trenbolone acetate, testosterone propionate)
8-10 weeks is more common. These reach peak levels quickly and clear the system faster, allowing PCT to begin sooner.
Time on + PCT = time off (minimum). If you run a 16-week cycle plus 4 weeks of PCT, you should be off for at least 20 weeks before considering another cycle. Many harm reduction advocates recommend even longer. Rushing back into another cycle before full recovery is one of the most common and most damaging mistakes.
Stacking — why less is more
“Stacking” means using multiple compounds simultaneously. This is extremely common but carries significantly higher risk than single-compound cycles.
Risks of stacking
- If you get a side effect, you cannot tell which compound caused it
- Each additional compound adds its own set of health risks
- Drug interactions between compounds are often poorly understood
- More compounds means more variables that can go wrong
- The temptation to add more becomes a pattern — cycles get increasingly complex and dangerous
Harm reduction approach
- Run testosterone alone for your first cycle
- Add one new compound at a time in subsequent cycles
- Increase dose before adding compounds — there is usually room to grow with what you have
- Keep stacks to 2-3 compounds maximum
- Every additional compound should have a clear purpose, not just because a forum recommended it
The reality is that the vast majority of steroid users would get better long-term results from running well-structured single or two-compound cycles with proper nutrition and training than from elaborate multi-compound stacks. More compounds does not always mean more results, but it does always mean more risk.
Blast & cruise vs cycling off
This is one of the most important decisions a steroid user will face, and it is one that many people slide into without fully understanding the implications.
Cycling off (traditional)
You run a cycle, do PCT, spend time completely off, and then decide whether to run another cycle. Your body has periods with no exogenous hormones where it attempts to recover natural production.
Blast & cruise (B&C)
You alternate between higher doses (“blast”) and a low TRT dose (“cruise”) without ever fully coming off. There is no PCT because you are always on exogenous testosterone.
B&C is a lifelong commitment
Many young men start blast & cruise without understanding that they may be committing to injecting testosterone for the rest of their lives. After extended periods of B&C, natural testosterone production frequently does not recover to adequate levels. If you are in your early 20s, think very carefully about whether you want to be dependent on an injection every week for the next 50+ years, and whether you want to significantly compromise your fertility.
Coming off — PCT overview
Post Cycle Therapy (PCT) is the process of using specific drugs to help restart your body's natural testosterone production after a steroid cycle. During a cycle, your HPTA (Hypothalamic-Pituitary-Testicular Axis) shuts down because the body detects high levels of hormones and sees no need to produce its own. PCT aims to kick-start this system again.
Standard PCT protocol
Start 2-3 weeks after your last injection of a long-ester compound (enanthate/cypionate). For short esters (propionate/acetate), start 3-5 days after last injection.
Nolvadex (tamoxifen) is the most commonly recommended. Clomid (clomiphene) is an alternative. Some protocols use both.
Nolvadex: 20mg per day for 4-6 weeks. Some older protocols suggest higher doses in the first week, but more recent harm reduction thinking favours a flat 20mg throughout to reduce side effects.
Have your PCT drugs before you start your cycle. Do not wait until the cycle is over to source them. If your supply chain falls through, you could end up without PCT when you need it most.
Common mistakes
Starting too young
If you are under 25, your endocrine system is still developing. Introducing exogenous hormones can cause lasting damage that would not have occurred if you had waited.
Running multiple compounds on first cycle
You have no baseline for how you respond. If something goes wrong, you will not know which compound caused it. Testosterone only for a first cycle is the standard harm reduction advice for good reason.
No blood work
Flying blind. Without blood work, you do not know what your baseline was, whether something is going wrong during the cycle, or whether you have recovered afterwards.
Skipping PCT
Not doing PCT after cycling off means relying on your body to restart production on its own. It might. It might not. PCT significantly improves the chances and speed of recovery.
Cycling back on too soon
Not waiting long enough between cycles means the body never fully recovers. Each shortened recovery increases the chance that natural production will not come back adequately.
Escalating doses and compounds
Chasing diminishing returns by adding more and more. The risk-to-reward ratio gets worse with every escalation, not better.
Not having an AI on hand
Oestrogen-related side effects (gynecomastia, severe water retention) can develop quickly. Having an aromatase inhibitor available means you can address it immediately rather than scrambling to source one.
Get Blood Work Done
Before, during, and after your cycle. It is the most important harm reduction step you can take.
Read the Blood Work Guide